Mid-West Instrument’s 220/240 explosion-proof, differential-indicating switches are extremely lightweight and ruggedly compact. The switches are CSA, UL, and ATEX certified. As a condition of continuing certification, Mid-West Instrument is subject to unannounced audits by all certifying bodies. This applies to the entire assembly as mandated by the applicable hazardous locations standards.

Benefits Include:
· Compact, lightweight aluminum (or 316/316L )
· Weather resistant, 4 1/2” gauge front
· ATEX Ex d IIB+H2 ExII 2GD IP65 classification
· CSA Certified & UL Listed: Class I, Division I Groups B, C, & D, classification
· 1/2” FNPT Cable or conduit entry
· Over range protection & 5 year warranty

Model 220-Piston Style
· Working pressure to 4000 PSI (275bar)
· Ranges from 0-5 PSID to 0-100 PSID (0-0.35 bar to 0-7.0 bar)

Model 240-Diaphragm Style
· Total separation between high & low side
· 1500 PSI (103 bar) working pressure
· Ranges from 0-20”H20 to 0-100 PSID (0-50 mbar to 0-7bar)